User equipment (UE) capability on band group sharing of same quasi co-location (QCL) parameter

Abstract

Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for signaling user equipment (UE) capability for sharing quasi co-location (QCL) parameter across a group of frequency bands. For example, the UE may report, to a network entity, a capability of the UE to apply a common spatial QCL parameter for at least one group of frequency bands. The UE receives an indication of a change to the common transmission control indicator (TCI) states or spatial relation parameter to be applied across the group of frequency bands. The UE applies the change across the group of frequency bands.

What is claimed is: 
     
       1. A method for wireless communications by a user equipment (UE), comprising:
 reporting, to a network entity, a capability of the UE to apply a common spatial quasi co-location (QCL) parameter for at least one group of a plurality of component carriers, wherein the UE separately reports capabilities of the UE to apply a common downlink QCL parameter and a common uplink QCL parameter for the at least one group; 
 receiving an indication of a change to common transmission control indicator (TCI) states or a spatial relation parameter to be applied across the at least one group; and 
 applying the change across the plurality of component carriers of the at least one group. 
 
     
     
       2. The method of  claim 1 , wherein the common spatial QCL parameter comprises at least one of a transmission control indicator (TCI) state parameter or a spatial relation parameter for the at least one group of the plurality of component carriers. 
     
     
       3. The method of  claim 1 , wherein the UE indicates:
 a group ID for each of a plurality of component carriers, wherein component carriers with a same group ID share a same common QCL parameter. 
 
     
     
       4. The method of  claim 3 , wherein:
 the indication of the change indicates a group ID; and 
 the UE applies the change across all component carriers with the indicated group ID. 
 
     
     
       5. The method of  claim 3 , wherein:
 the indication of the change indicates a frequency band ID; and 
 the UE applies the change across all component carriers that have a same group ID as the indicated frequency band ID. 
 
     
     
       6. The method of  claim 1 , wherein the UE indicates:
 a group ID for each of one or more component carrier combinations that share a same common QCL parameter. 
 
     
     
       7. The method of  claim 6 , wherein:
 the indication of the change indicates a group ID; and 
 the UE applies the change across all component carriers of a component carrier combination with the indicated group ID. 
 
     
     
       8. The method of  claim 6 , wherein:
 the indication of the change indicates a frequency band ID; and 
 the UE applies the change across all component carriers of a component carrier combination with the indicated group ID. 
 
     
     
       9. The method of  claim 1 , wherein the capability of the UE to apply the common uplink QCL parameter is only applicable to at least one of: component carriers within a certain frequency range or for time division duplexed (TDD) communications. 
     
     
       10. A method for wireless communications by a network entity, comprising:
 receiving, from a user equipment (UE), an indication of a capability of the UE to apply a common spatial quasi co-location (QCL) parameter for at least one group of a plurality of component carriers, wherein the UE separately reports capabilities of the UE to apply a common downlink QCL parameter and a common uplink QCL parameter for the at least one group; and 
 signaling the UE an indication of a change to common transmission control indicator (TCI) states or a spatial relation parameter to be applied across the plurality of component carriers of the at least one group. 
 
     
     
       11. The method of  claim 10 , wherein the common spatial QCL parameter comprises at least one of a transmission control indicator (TCI) state parameter or a spatial relation parameter for the at least one group. 
     
     
       12. The method of  claim 10 , wherein the UE indicates:
 a group ID for each of a plurality of component carriers, wherein component carriers with a same group ID share a same common QCL parameter. 
 
     
     
       13. The method of  claim 12 , wherein:
 the indication of the change indicates a group ID; and 
 the UE is to apply the change across all component carriers with the indicated group ID. 
 
     
     
       14. The method of  claim 12 , wherein:
 the indication of the change indicates a frequency band ID; and 
 the UE is to apply the change across all component carriers that have a same group ID as the indicated frequency band ID. 
 
     
     
       15. The method of  claim 10 , wherein the UE indicates:
 a group ID for each of one or more component carrier combinations that share a same common QCL parameter. 
 
     
     
       16. The method of  claim 15 , wherein:
 the indication of the change indicates a group ID; and 
 the UE is to apply the change across all component carriers of a component carrier combination with the indicated group ID. 
 
     
     
       17. The method of  claim 15 , wherein:
 the indication of the change indicates a frequency band ID; and 
 the UE is to apply the change across all component carriers of a component carrier combination that includes the frequency band ID. 
 
     
     
       18. The method of  claim 10 , wherein the capability of the UE to apply the common uplink QCL parameter is only applicable to at least one of: component carriers within a certain frequency range or for time division duplexed (TDD) communications. 
     
     
       19. An apparatus for wireless communications by a user equipment (UE), comprising:
 a transmitter configured to report, to a network entity, a capability of the UE to apply a common spatial quasi co-location (QCL) parameter for at least one group of a plurality of component carriers, wherein the UE separately reports capabilities of the UE to apply a common downlink QCL parameter and a common uplink QCL parameter for the at least one group; 
 a receiver configured to receive an indication of a change to common transmission control indicator (TCI) states or a spatial relation parameter to be applied across the at least one group; and 
 at least one processor configured to apply the change across the plurality of component carriers of the at least one group. 
 
     
     
       20. The apparatus of  claim 19 , wherein the common spatial QCL parameter comprises at least one of a transmission control indicator (TCI) state parameter or a spatial relation parameter for the at least one group. 
     
     
       21. The apparatus of  claim 19 , wherein the capability of the UE to apply the common uplink QCL parameter is only applicable to at least one of: component carriers within a certain frequency range or for time division duplexed (TDD) communications. 
     
     
       22. The apparatus of  claim 19 , wherein the UE indicates a group ID for each of a plurality of component carriers, wherein component carriers with a same group ID share a same common QCL parameter. 
     
     
       23. An apparatus for wireless communications by a network entity, comprising:
 a receiver configured to receive, from a user equipment (UE), an indication of a capability of the UE to apply a common spatial quasi co-location (QCL) parameter for at least one group of a plurality of component carriers, wherein the UE separately reports capabilities of the UE to apply a common downlink QCL parameter and a common uplink QCL parameter for the at least one group; 
 a transmitter configured to signal the UE an indication of a change to common transmission control indicator (TCI) states or a spatial relation parameter to be applied across the plurality of component carriers of the at least one group; and 
 at least one processor configured to apply the change across the at least one group. 
 
     
     
       24. The apparatus of  claim 23 , wherein the common spatial QCL parameter comprises at least one of a transmission control indicator (TCI) state parameter or a spatial relation parameter for the at least one group. 
     
     
       25. The apparatus of  claim 23 , wherein the capability of the UE to apply the common uplink QCL parameter is only applicable to at least one of: component carriers within a certain frequency range or for time division duplexed (TDD) communications. 
     
     
       26. The apparatus of  claim 23 , wherein the UE indicates a group ID for each of a plurality of component carriers, wherein component carriers with a same group ID share a same common QCL parameter.